genxperformance

Bump Need Help here Guys

FooK

fully retarded distributor, fully retarded move. just so you know.

Semnos

try retarding the dizzy about 3-4 degrees and go from there..

fast2camciv

are you getting a CEL at all when you go into vtec? i also have a gude head on my z6 although im running the stck z6 cam. have you done a valve adjust on it? i think gudes specs are different for valve lash than stock. it really could be your valves. when the valve lash isnt right it causes all kinds of problems. get a timing light on it also make sure that is correct also and then try playin with your cam gear a bit. when i put the stock cam in my gude head i had to advance the cam 6 drgrees just to get it back to stock timing. ran like ---- until i did that.

scrotumLIP

you are losing power from the retarded distributor. you have a chipped p28 and tools to tune the car with uberdata, you're an idiot for not doing so. i swear to god, my buddy was having the same exact problem with the hack on his z6, he had higher comp. so he had to retard the dizzy so he wouldn't get detonation, and the power loss owned his ***. we threw in a chipped p28 with a completely stock basemap, reset the timing, and he about ---- his pants. that's an idiot move running the hack like that and just guessing retarding the dizzy all the way will make things safe, hell, your egt's are prolly throught the roof!

genxperformance

Actually my EGT's arn't through the roof because I tuned it with my wideband =) I hear what you are saying though in regards to the ECU. I just have not had the time to test if it is good or not. I think some of the solder cracked and my friend tried to de-solder it and re solder it. The only reason why I even baught the VAFC was to get my car running so I could go back to work. It's a long story, but to make it short. I had a 92 civic ex 4 door for the past few years. Finally went B series last november, baught all my new turbo goodies. Self tuned the car at 1 bar making 350whp on my ls motor, then some little **** decided to jack the car and strip it, so I had to wait 4ever and insurance gave me a lame cashout which is why I baught this hatch.

When I first got the hatch the owner told me the o2 sensor was bad but when I drove it I knew he was wrong. It had a FMU, MSD Inline Fuel Pump and ran kinda shitty. I tossed in my old ls stock injecors and the car ran excellent come to find an injector had failed. SO I took out the FMU and inline and dropped in my walboro, and my chipped p28 then after partial tuning come to find a solid CEL couldn't get my car to start, we tried everything so that's when I ordered the VAFC just so I could drive my car. Trust me i'm def. going back to uberdata.

So what's the bottom line sound like here, timing issue? Adjusting the valves today, prob. the usual maintenance change oil, spark plugs, and checking timing. Anything else?

genxperformance

no CEL at all. Hopefully I can find the specs for the GUDE head some place but not sure I will be able to.

scrotumLIP

your egt's don't have anything to do with your 'wideband', you tune your a/f ratio with a wideband, you monitor/tune your timing with an egt, the more retarded, the hotter your egt's are b/c the gas is escaping the combustion chamber and exploding in your manifold, so yes, retarded distributor all the way, equals high egt's as far as what to do with the car, some people have really good luck with the afc's, some people can never get them to run right as long as they live, i'm sure the problem is in your fuel/timing

genxperformance

so people don't get the wrong idea here . . . . . since my dist. was retarded all the way, I advanced it 1/4 of the way back so now it's sitting right btween stock/retarded. Low end pulls a little better, better throttle responce, but still tapers off when vtec engages.

We checked my valves and only a couple were out of spec a tad. Now when valves tick that's a sign of them being to loose or to tight? I would like to re check my valves. I am trying to find some specs that will benifit me since that damn cam that's in my motor has such a high lift and duration. Thinking of maybe taking the cam out and running a stock cam if I can't find any specs to benifit me with the camshaft.

The VAFC II seems a bit different from the first gen. It's got a couple different VTEC settings that i'm trying to read up on to see if that could help my problem out. It's really hard to tell if VTEC is engaging though. I've never owned a DOHC VTEC Turbo car, but all the times I ran all motor with my SOHC Vtec u can tell when Vtec engages, but when you enter boost you can't hear the crossover anymore, so i'm kinda boggled.

We will be testing the ECU today, and if that works i'm moving back over to Uberdata or CROME, but I would still like to address this issue anyways incase the ECU fails.

FooK

if you've got the distributor in a decent place as far as timing goes, and you're dropping power at the vtec crossover, id say one of two things

bad afc setting or wiring

or

just not engaging at all, which could lead back to the AFC again.